RRB NTPC CBT-1 previous year question
Three numbers are in the ratio 9 : 7 : 5, and their LCM is 2205. Their HCF is: 8625
Asked in RRB NTPC 2026 — 18 June Shift 2 · Quantitative Aptitude
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Correct answer: (A) 7
With numbers 9k, 7k, 5k, their LCM = k x LCM(9,7,5) = 315k = 2205, giving k=7. Their HCF = k x HCF(9,7,5) = k x 1 = 7.
हिंदी में प्रश्न
तीन संख्याएँ 9 : 7 : 5 के अनुपात में हैं, और उनका LCM 2205 है। उनका HCF कितना है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 24 सीओ जी,
9k, 7k, 5k संख्याओं के लिए, LCM = k x LCM(9,7,5) = 315k = 2205, जिससे k=7 मिलता है। इनका HCF = k x HCF(9,7,5) = k x 1 = 7 है।
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